| NGC 2305 | |
| Constellation Name: | Volans |
| Epoch: | J2000 |
| Type: | E2: pec[1] |
| Dist Ly: | NaNMpc |
| Z: | 0.011671 |
| H Radial V: | 3499 ± 20 km/s |
| Appmag V: | 11.7 |
| Size V: | 2.1' x 1.5' |
| Size: | ~57.71kpc (estimated) |
| Names: | , ESO 087- G 044 |
NGC 2305 is an elliptical galaxy in the constellation of Volans. Its velocity with respect to the cosmic microwave background is 3605 ± 21 km/s, which corresponds to a Hubble distance of 53.17 ± 3.75 Mpc (∼174 million light-years). It was discovered by British astronomer John Herschel on 30 November 1834.[2]
The galaxy NGC 2305 forms a physical pair with NGC 2307, collectively named RR 143, with a distance of at least 51 kpc between the galaxies.[3]
Two supernovae have been observed in NGC 2305: SN 2011fn (type I, mag 17.9)[4] and SN 2023txv (type Ia, mag 17.4).[5] There is some uncertainty about SN 2011fn; it was classified as either type Ia or type Ic, and it is possible that the host galaxy of this supernova was not NGC 2305, but instead the nearby galaxy 2MASS J06483060-6415588.[6]